@misc{indiciae702c11b02946,
  title = {The design of the model V transmission fluorimeter},
  author = {Mary H. Fletcher and Irving May and J.W. Anderson},
  year = {1951},
  doi = {10.3133/ofr5165},
  url = {https://pubs.usgs.gov/publication/ofr5165},
  note = {Source identifier: ofr5165}
}